Research-based review: We have not hands-on tested this unit. Our assessment is based on FOXWELL first-party documentation, current Amazon marketplace data, and comparison with other verified four-system scanners.
Quick Verdict
The FOXWELL NT604 is a four-system diagnostic scanner covering engine, ABS, SRS, and transmission on supported vehicles. FOXWELL also verifies full generic OBD2 functions, I/M readiness, DTC lookup, live data, AutoVIN, battery-voltage checking, Wi-Fi updates, and no subscription fee for this series. At our current Amazon snapshot of $135.96, it is a practical step up from basic code readers without moving into all-system or bidirectional territory.
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Check current FOXWELL NT604 price on Amazon →
Key Specifications
| Area | Verified information |
|---|---|
| Diagnostic scope | Engine, ABS, SRS, transmission |
| Generic OBD2 | Full OBD2 functions and I/M readiness |
| Code tools | Read/clear fault codes and DTC lookup |
| Live data | Verified |
| Vehicle identification | AutoVIN verified |
| Battery information | Battery-voltage checking |
| Updates | Wi-Fi updating; no subscription fee stated for the series |
| Higher-tier reset functions | Not verified for this NT604 ASIN |
| Price snapshot | $135.96 USD; time-sensitive |
What the NT604 Can Diagnose
FOXWELL verifies diagnostics for engine, ABS, SRS, and transmission. Those four systems cover many of the warning lights and module faults a DIY owner encounters, while staying more focused than a true all-system scanner.
The NT604 also retains the standardized OBD2 layer for emissions-related functions, including I/M readiness and DTC lookup.
Live Data and AutoVIN
FOXWELL confirms live-data display and AutoVIN. Live data helps users observe current vehicle parameters instead of relying only on stored codes, while AutoVIN can simplify vehicle identification when supported.
Battery-Voltage Checking
The series page also lists battery-voltage checking. That is useful for a quick electrical sanity check, but it should not be confused with a dedicated battery-health test or load-test platform.
Naming Caveat: NT604 vs NT604 Elite
FOXWELL’s own NT6X4-series page uses inconsistent naming: the family heading references NT604Elite while the B096Y2B8LP cloth-bag package is labeled NT604. We therefore anchor this review to the ASIN and verified capability set rather than treating “Elite” wording as interchangeable.
Important Limitations
- Four systems, not all systems: Do not assume universal body/chassis/module access.
- No higher-tier reset claims: The first-party series page does not assign the NT614/NT624 service-function set to this NT604 ASIN.
- No verified active tests: We do not classify this NT604 as bidirectional.
- Coverage varies: Vehicle year/make/model still determines exact module support.
Best For
- DIY users who need engine, ABS, SRS, and transmission diagnostics.
- Owners who want live data and AutoVIN without a professional tablet.
- Buyers who prefer Wi-Fi updating and no stated subscription fee.
Who Should Skip It
Skip the NT604 if you only need basic Check Engine codes; a simpler scanner costs less. Also skip it if you need all-system module discovery, many maintenance functions, ECU coding, or bidirectional active tests.
Alternatives
The FOXWELL NT604 Elite is another verified four-system option in the same family. The FOXWELL NT614 Elite adds verified oil-reset and EPB service functions. If active tests matter, look at the THINKCAR 662.
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Methodology & Sources
This review uses FOXWELL’s NT6X4-series first-party support page and anchors the product identity to ASIN B096Y2B8LP because FOXWELL’s naming on that series page is inconsistent.
- FOXWELL NT6X4-series official support page
The Practical Takeaway
The FOXWELL NT604 is a sensible middle-tier scanner when your needs are concentrated in engine, ABS, SRS, transmission, generic OBD2, and live data. Its biggest caveat is product-family naming, so evaluate it by ASIN and verified functions—not by assuming every NT6X4 feature applies to this exact package.